Denver to Seattle

DENSEA

Fly from Denver to Seattle starting at USD 29 with Frontier Airlines.Best fare available on Aug 10, 2026.Limited seats. Better plans. Book before it's gone.

Denver to Seattle cheapest flights this week

15 Jul
Frontier Airlines
07:25DEN
18:51SEA
1 StopUSD 150VIEW DEAL
16 Jul
Frontier Airlines
07:13DEN
10:17SEA
DirectUSD 115VIEW DEAL
19 Jul
Alaska Airlines
06:02DEN
09:05SEA
DirectUSD 85VIEW DEAL
19 Jul
Frontier Airlines
07:13DEN
10:17SEA
DirectUSD 153VIEW DEAL
20 Jul
Frontier Airlines
09:13DEN
12:20SEA
DirectUSD 153VIEW DEAL
24 Jul
Frontier Airlines
16:25DEN
11:39SEA
1 StopUSD 147VIEW DEAL
10 Aug
Frontier Airlines
07:00DEN
10:04SEA
DirectUSD 29VIEW DEAL
13 Sept
Frontier Airlines
07:45DEN
10:51SEA
DirectUSD 89VIEW DEAL
3 Jan
Alaska Airlines
07:00DEN
10:05SEA
DirectUSD 208VIEW DEAL

Denver to Seattle monthly flight fare trend

Jul
from USD 85
Aug
from USD 29
Sep
from USD 89
Oct
No flights
Nov
No flights
Dec
No flights

Airport Details

Origin

Denver

Denver International Airport (DEN)

Denver, DEN
Zone

Denver

Elev

5431 ft

Destination

Seattle

Seattle–Tacoma International Airport (SEA)

Seattle, SEA
Zone

Los Angeles

Elev

433 ft

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